Two-Dimensional Effects on Measurement of Thermal Diffusivity by AC Calorimetric Method: I. Conditions for Precise Measurement
Two-Dimensional Effects on Measurement of Thermal Diffusivity by AC Calorimetric Method: I. Conditions for Precise Measurement
复制标题
二维效应对交流量热法测量热扩散率的影响：一、精确测量的条件
DOI：
10.1143/jjap.38.2988
复制
发表时间：
1999
影响因子：
1.5
通讯作者：
YukihiroHamada Kaneda
中科院分区：
文献类型：
--
作者：
I. Hatta;K. Fujii;AtsushiSakibara Takahashi;YukihiroHamada Kaneda
在应用交流量热法精确测量薄材料的热扩散率时，需要一维温度波的传播。在相对较厚的材料中，一维温度波传播发生变形，严格意义上，应考虑二维温度波传播。在本文中，我们提出了在一维温度波传播的框架下，在±2%的精度内测量热扩散率所需的材料的最大厚度的条件，基于二维温度波传播的解析结果。
In the application of an ac calorimetric method to precise thermal diffusivity measurement of a thin material, one-dimensional temperature wave propagation is required. In a relatively thick material, one-dimensional temperature wave propagation is deformed and in the strict sense, two-dimensional temperature wave propagation should be taken into account. In the present paper, we propose the condition of the maximum thickness of a material required to measure thermal diffusivity within an accuracy of ±2% in the framework of one-dimensional temperature wave propagation, based upon the results obtained analytically for the two-dimensional temperature wave propagation.